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https://www.readbyqxmd.com/read/29667867/excelling-at-youth-level-in-competitive-track-and-field-athletics-is-not-a-prerequisite-for-later-success
#1
Philip E Kearney, Philip R Hayes
Enhancing our understanding of athlete development would be valuable for coaches, parents and administrators to set realistic performance expectations and to advance youth sport policy. To this end, a database of track and field performances was examined. Records of 134,313 performances by athletes aged between 12 and 35 years in sprinting, throwing, jumping and middle distance events were analysed. Results revealed that a minority (Male, 9%; Female, 13%) of top 20 ranked senior athletes were also ranked in the top 20 at Under 13 (U13)...
April 18, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29667530/effects-of-developmental-age-on-symptom-reporting-and-neurocognitive-performance-in-youth-after-sports-related-concussion-compared-to-control-athletes
#2
Donna L Murdaugh, Kim E Ono, Sarah O Morris, Thomas G Burns
There is increased necessity to focus research on school-aged athletes with sports-related concussion (SRC). This study assessed differences in symptom reporting and neurocognitive performance in youth athletes who sustained a sports-related concussion. A total of 1345 concussed and 3529 nonconcussed athletes (ages 8-21) completed the Immediate Post-concussive Assessment and Cognitive Testing (ImPACT). Analyses of covariance were conducted in order to assess differences in neurocognitive performance and symptom reporting between the sports-related concussion and control groups across age ranges...
January 1, 2018: Journal of Child Neurology
https://www.readbyqxmd.com/read/29667429/quadriceps-function-knee-pain-and-self-reported-outcomes-in-patients-with-anterior-cruciate-ligament-reconstruction
#3
Adam S Lepley, Brian Pietrosimone, Marc L Cormier
CONTEXT:   Interactions among muscle strength, pain, and self-reported outcomes in patients with anterior cruciate ligament reconstruction (ACLR) are not well understood. Clarifying these interactions is of clinical importance because improving physical and psychological function is thought to optimize outcomes after ACLR. OBJECTIVE:   To examine the relationships among neuromuscular quadriceps function, pain, self-reported knee function, readiness to return to activity, and emotional response to injury both before and after ACLR...
April 18, 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29666559/assessing-performance-in-pre-season-wrestling-athletes-using-biomarkers
#4
Ionas Papassotiriou, Artemissia-Phoebe Nifli
Introduction: Although regular training introduces the desired changes in athletes' metabolism towards optimal final performance, literature is rarely focusing on the metabolic responses off-competition. Therefore, the aim of this study was to evaluate biochemical indices during typical preseason training in wrestling athletes. Materials and methods: Twenty male freestyle and Greco-roman wrestlers (14 to 31 years) followed a typical session of the preparatory phase...
June 15, 2018: Biochemia Medica: časopis Hrvatskoga Društva Medicinskih Biokemičara
https://www.readbyqxmd.com/read/29665761/expert-rater-agreement-and-inter-intrarater-reliability-for-the-furtado-gallagher-computerized-observational-movement-pattern-assessment-system
#5
Ovande Furtado, Jere D Gallagher
Fundamental movement skills (FMS) play a crucial role in a child's motor skill development, as their mastery is related to the acquisition and mastery of specialized sport skills and to a child's general health through the prevention of weight gain and increased level of physical activity. Thus, the accurate and reliable measurement of FMS is of related importance. This article presents the results of two studies intended to assess expert-rater agreement and inter-/intrarater scoring reliability in the administration of a new observational FMS instrument, the Furtado-Gallagher Computerized Observational Movement Pattern Assessment System (FG-COMPASS)...
January 1, 2018: Perceptual and Motor Skills
https://www.readbyqxmd.com/read/29665604/-foreign-material-free-anterior-cruciate-ligament-repair-with-hamstring-graft-felmet-technique
#6
Marc Chmielnicki, Wolfram Siebert, Axel Prokop
Rupture of the anterior cruciate ligament (ACL) is a common sports injury. Shear forces can damage the articular cartilage and lead to early osteoarthritis. Ligamentary stabilisation of the knee is necessary. Today, arthroscopic ACL repair is a standard knee procedure. Transplant fixation is often performed using implants, e.g. interference screws. The foreign material-free procedure using the Felmet technique enables biological, mechanically stable fixation of the hamstring tendon graft. We demonstrate the surgical technique, including meniscus suture and a video case study...
April 2018: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/29663863/athletic-identity-and-self-esteem-among-active-and-retired-paralympic-athletes
#7
Adriana Marin-Urquiza, José Pedro Ferreira, Debbie Van Biesen
Athletic identity (AI) has been suggested as a variable that can have an impact on the psychological health of the athletes upon retirement. The aim of this study was to provide more insight on the transition out of elite sport by assessing and comparing the extent of AI and self-esteem in an active group (AG) and a retired group (RG) of Paralympic athletes. Perceived stress and depressive symptoms were additionally assessed in the AG and RG, respectively. A non-probability sampling method was used to recruit active and retired Paralympic athletes (AG, n = 43; RG, n = 41, where 35 retired voluntarily and 6 retired involuntarily) with visual or physical impairments, from Dutch-, English-, Portuguese- and Spanish-speaking countries...
April 17, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/29663142/do-we-need-a-cool-down-after-exercise-a-narrative-review-of-the-psychophysiological-effects-and-the-effects-on-performance-injuries-and-the-long-term-adaptive-response
#8
REVIEW
Bas Van Hooren, Jonathan M Peake
It is widely believed that an active cool-down is more effective for promoting post-exercise recovery than a passive cool-down involving no activity. However, research on this topic has never been synthesized and it therefore remains largely unknown whether this belief is correct. This review compares the effects of various types of active cool-downs with passive cool-downs on sports performance, injuries, long-term adaptive responses, and psychophysiological markers of post-exercise recovery. An active cool-down is largely ineffective with respect to enhancing same-day and next-day(s) sports performance, but some beneficial effects on next-day(s) performance have been reported...
April 16, 2018: Sports Medicine
https://www.readbyqxmd.com/read/29663075/comparison-of-running-and-cycling-economy-in-runners-cyclists-and-triathletes
#9
Wannes Swinnen, Shalaya Kipp, Rodger Kram
PURPOSE: Exercise economy is one of the main physiological factors determining performance in endurance sports. Running economy (RE) can be improved with running-specific training, while the improvement of cycling economy (CE) with cycling-specific training is controversial. We investigated whether exercise economy reflects sport-specific skills/adaptations or is determined by overall physiological factors. METHODS: We compared RE and CE in 10 runners, 9 cyclists and 9 triathletes for running at 12 km/h and cycling at 200 W...
April 16, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29663013/bone-to-bone-integrations-were-complete-within-5-months-after-anatomical-rectangular-tunnel-anterior-cruciate-ligament-reconstruction-using-a-bone-patellar-tendon-bone-graft
#10
Hironari Masuda, Shuji Taketomi, Hiroshi Inui, Naoya Shimazaki, Nobuhiro Nishihara, Seikai Toyooka, Hirotaka Kawano, Takumi Nakagawa
PURPOSE: Anterior cruciate ligament (ACL) reconstruction using a bone-patellar tendon-bone (BTB) graft is known to provide secure fixation due to the direct bone-to-bone integration of the bone plug and bone tunnel. It is important to know the time required for bone integration when designing the postoperative rehabilitation protocol or deciding when the patient can return to competition-level activity, especially if the patient is an athlete. However, because reports are scarce, the period necessary for bone-to-bone integration after ACL reconstruction using a BTB graft remains unclear...
April 16, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29662910/outcomes-and-return-to-sport-after-revision-anterior-cruciate-ligament-reconstruction-in-adolescent-athletes
#11
Michael Saper, Stephanie Pearce, Joseph Shung, Robert Zondervan, Roger Ostrander, James R Andrews
Background: The number of adolescent anterior cruciate ligament (ACL) injuries is rising with increased participation in higher level athletics at earlier ages. With an increasing number of primary ACL reconstructions (ACLRs) comes a rise in the incidence of revision ACLRs. Purpose: To evaluate the clinical results of revision ACLR across a group of high-level adolescent athletes with at least 2-year follow-up. Study Design: Case series; Level of evidence, 4...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29661183/linguistic-validation-validity-and-reliability-of-the-british-english-versions-of-the-disabilities-of-the-arm-shoulder-and-hand-dash-questionnaire-and-quickdash-in-people-with-rheumatoid-arthritis
#12
Alison Hammond, Yeliz Prior, Sarah Tyson
BACKGROUND: Although the Disabilities of the Arm, Shoulder and Hand (DASH) questionnaire is widely used in the UK, no British English version is available. The aim of this study was to linguistically validate the DASH into British English and then test the reliability and validity of the British English DASH, (including the Work and Sport/Music DASH) and QuickDASH, in people with rheumatoid arthritis (RA). METHODS: The DASH was forward translated, reviewed by an expert panel and cognitive debriefing interviews undertaken with 31 people with RA...
April 16, 2018: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29659401/effects-of-different-footwear-properties-and-surface-instability-on-neuromuscular-activity-and-kinematics-during-jumping
#13
Melanie Lesinski, Olaf Prieske, Ron Borde, Rainer Beurskens, Urs Granacher
Lesinski, M, Prieske, O, Borde, R, Beurskens, R, and Granacher, U. Effects of different footwear properties and surface instability on neuromuscular activity and kinematics during jumping. J Strength Cond Res XX(X): 000-000, 2018-The purpose of this study was to examine sex-specific effects of different footwear properties vs. barefoot condition during the performance of drop jumps (DJs) on stable and unstable surfaces on measures of jump performance, electromyographic (EMG) activity, and knee joint kinematics...
April 13, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29659337/hyperandrogenic-athletes-performance-differences-in-elite-standard-200m-and-800m-finals
#14
Jonathan Ospina Betancurt, Maria S Zakynthinaki, Maria Jose Martinez-Patiño, Carlos Cordente Martinez
The purpose of this study was to examine whether the difference in elite-standard track and field performance between women athletes with and without hyperandrogenism reaches the 10-12% difference in performance between men and women, using only results from elite-standard track and field final competitions. Officially available data from two hyperandrogenic women (Caster Semenya and Dutee Chand) were compared with the characteristic performance of 200m and 800m elite-standard finals. The finishing times of Caster Semenya, before her ineligibility to compete in 2009 and after the suspension of the 2011 IAAF Hyperandrogenism Regulations were found to be respectively 1...
April 16, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29659299/low-1-year-return-to-sport-rate-after-anterior-cruciate-ligament-reconstruction-regardless-of-patient-and-surgical-factors-a-prospective-cohort-study-of-272-patients
#15
Eric Hamrin Senorski, Eleonor Svantesson, Susanne Beischer, Christoffer Thomeé, Roland Thomeé, Jón Karlsson, Kristian Samuelsson
BACKGROUND: There is insufficient knowledge about the way that concomitant injuries affect the short-term likelihood of a return to a knee-strenuous sport after anterior cruciate ligament (ACL) reconstruction. Hypotheses/Purpose: The purpose was to study whether patient characteristics, concomitant injuries, and graft choice at primary ACL reconstruction can predict return to sport (RTS) 1 year after surgery. The hypotheses were that younger age at the time of ACL reconstruction would positively affect RTS, while the presence of concomitant injuries would negatively affect RTS 1 year after surgery...
April 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29659165/improving-academic-performance-of-sport-and-exercise-science-undergraduate-students-in-gross-anatomy-using-a-near-peer-teaching-program
#16
Ricardo Borges Viana, Mário Hebling Campos, Douglas de Assis Teles Santos, Isabela Cristina Maioni Xavier, Rodrigo Luiz Vancini, Marília Santos Andrade, Claudio Andre Barbosa de Lira
Peer and near-peer teaching programs are common in medical undergraduate courses. However, there are no studies that have investigated the effectiveness of a near-peer teaching program on the academic performance of undergraduate students pursuing sport and exercise science coursework. This study was conducted to analyze the effectiveness of such a program for students who participated in a course on the functional anatomy of the locomotor apparatus. A total of 39 student participants were divided into two groups: students in one group voluntarily attended at least one session of a near-peer teaching program, and students in the other group attended no sessions...
April 16, 2018: Anatomical Sciences Education
https://www.readbyqxmd.com/read/29657471/arthroscopic-knotless-rotator-cuff-repair-factors-associated-with-construct-selection-and-recent-trends-from-a-manual-review-of-1617-cases
#17
Sarav S Shah, Aalok Shah, Vivek Chadayammuri, Marlena McGill, Nicole Wei, David V Tuckman, Nicholas A Sgaglione
Purpose: Our aim was to identify predictors of construct selection and recent trends for arthroscopic knotless rotator cuff repair (RCR). Methods: A manual review of 1617 operative reports was performed. Results: A medium-sized tear had a threefold increase in odds of single row (SR) knotless repair (OR, 6.91; p = 0.009) versus SR knotted (OR, 3.05; p = 0.003). Generalist orthopaedic surgeons were 79% less likely to perform SR knotless repairs versus sports medicine trained specialists (p < 0...
March 2018: Journal of Orthopaedics
https://www.readbyqxmd.com/read/29652679/comparison-of-static-and-dynamic-balance-at-different-levels-of-sport-competition-in-professional-and-junior-elite-soccer-players
#18
Łukasz Jadczak, Monika Grygorowicz, Witold Dzudziński, Robert Śliwowski
Jadczak, Ł, Grygorowicz, M, Dzudziński, W, and Śliwowski, R. Comparison of static and dynamic balance at different levels of sport competition in professional and junior elite soccer players. J Strength Cond Res XX(X): 000-000, 2018-The purpose of this study was to compare body balance control and balance recovery strategies of professional football players, representing various sports levels in static (eyes open, eyes closed) and dynamic conditions, both on the dominant and nondominant leg. Three groups of professional and junior elite soccer players were investigated: a PRO group (n = 52), a U-21 group (n = 55), and a U-19 group (n = 47)...
April 12, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29651908/design-of-eccentric-training-system-based-on-multiple-input-single-output-miso-wiener-nonlinear-model
#19
Chunbo Liu
The efficacy of eccentric cycling has been proved in research, clinical and sport training activities. However, several constraints make it difficult to use commercially available eccentric cycle ergometers. In this study, the multiple-input single-output (MISO) Wiener nonlinear model was applied to the design of eccentric training system. Particle Swarm Optimization (PSO) algorithm was then applied to identify the parameters of the MISO Wiener nonlinear model. The correlation coefficient of 0.9985 and root mean square error of 3...
April 13, 2018: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/29651858/sleep-related-issues-for-recovery-and-performance-in-athletes
#20
Sarah Kölling, Rob Duffield, Daniel Erlacher, Ranel Venter, Shona L Halson
The body of research that reports the relevance of sleep in high-performance sports is growing steadily. While the identification of sleep cycles and diagnosis of sleep disorders is limited to lab-based assessment via polysomnography, the development of activity-based devices estimating sleep patterns provides greater insight into the sleep behaviour of athletes in ecological settings. Overall, small sleep quantity and/or poor quality appears to exist in many athletic populations, though this may be related to training and competition context...
April 13, 2018: International Journal of Sports Physiology and Performance
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